Uplifting Athletes, an organization founded by former Penn State football players to fight rare diseases, has teamed with another former player to #SackCancer.

Uplifting Athletes announced last week that shirts featuring Devon Still's former Penn State No. 71 will be on sale through The Family Clothesline in State College. The shirts feature the #SackCancer hashtag that has become popular on social media.

Proceeds from sales of the shirts will benefit Children's Hospital of Philadelphia, where Still's 4-year-old daughter Leah is being treated for neuroblastoma.

Still has become an advocate for children's cancer research since his daughter was diagnosed earlier this year. His Cincinnati Bengals jersey has become among the top-sellers in the NFL, with proceeds benefiting Cincinnati Children's Hospital Medical Center.

Still has been providing updates on his daughter's condition through his Instagram account.

Uplifting Athletes, which runs the annual Penn State Lift For Life fundraiser, initially was founded to raise money and awareness for kidney cancer research. It now has chapters at 23 schools across the country, all of which are run by current football players. Each chapter focuses on a rare disease.